netdev - [PATCH v3 net-next 06/11] net: bridge: make nbp_switchdev_unsync

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Date:   Tue, 15 Feb 2022 19:02:13 +0200
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     netdev@...r.kernel.org
Cc:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        Jiri Pirko <jiri@...dia.com>, Ido Schimmel <idosch@...dia.com>,
        Rafael Richter <rafael.richter@....de>,
        Daniel Klauer <daniel.klauer@....de>,
        Tobias Waldekranz <tobias@...dekranz.com>
Subject: [PATCH v3 net-next 06/11] net: bridge: make nbp_switchdev_unsync_objs() follow reverse order of sync()

There may be switchdev drivers that can add/remove a FDB or MDB entry
only as long as the VLAN it's in has been notified and offloaded first.
The nbp_switchdev_sync_objs() method satisfies this requirement on
addition, but nbp_switchdev_unsync_objs() first deletes VLANs, then
deletes MDBs and FDBs. Reverse the order of the function calls to cater
to this requirement.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
v2->v3: none
v1->v2: patch is new

 net/bridge/br_switchdev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index fb5115387d82..b7c13f8cfce5 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -707,11 +707,11 @@ static void nbp_switchdev_unsync_objs(struct net_bridge_port *p,
 	struct net_device *br_dev = p->br->dev;
 	struct net_device *dev = p->dev;
 
-	br_switchdev_vlan_replay(br_dev, dev, ctx, false, blocking_nb, NULL);
+	br_switchdev_fdb_replay(br_dev, ctx, false, atomic_nb);
 
 	br_switchdev_mdb_replay(br_dev, dev, ctx, false, blocking_nb, NULL);
 
-	br_switchdev_fdb_replay(br_dev, ctx, false, atomic_nb);
+	br_switchdev_vlan_replay(br_dev, dev, ctx, false, blocking_nb, NULL);
 }
 
 /* Let the bridge know that this port is offloaded, so that it can assign a
-- 
2.25.1